APPARATUS AND METHODS FOR SIDEWALL PERCUSSªON CORING USING A VOLTAGE ACTIVATED IGNITER

摘要

An apparatus and methods for sidewall percussion coring service are disclosed. In some embodiments, the sidewall percussion coring tool includes a voltage activated igniter, explosive material, and a core barrel in communication with the explosive material, wherein activation of the igniter causes detonation of the explosive material to propel the core barrel from tool. Some method embodiments for performing sidewall percussion coring service using the disclosed sidewall percussion coring tool include positioning the tool within a wellbore, activating the voltage activated igniter-housed within the tool, detonating the explosive material within the tool with the voltage activated igniter, propelling a core barrel from the tool into the surrounding formation by detonation of the explosive material, retrieving the core barrel from the formation, and removing the tool from the wellbore.